Put Varnish on port 80

Until now we've been running with Varnish on a high port which is great for testing purposes. Let's now put Varnish on the default HTTP port 80.

First we stop varnish: service varnish stop

Now we need to edit the configuration file that starts Varnish.

Debian/Ubuntu

On Debian/Ubuntu this is /etc/default/varnish. In the file you'll find some text that looks like this:

DAEMON_OPTS="-a :6081 \
             -T localhost:6082 \
             -f /etc/varnish/default.vcl \
             -S /etc/varnish/secret \
             -s malloc,256m"

Change it to:

DAEMON_OPTS="-a :80 \
             -T localhost:6082 \
             -f /etc/varnish/default.vcl \
             -S /etc/varnish/secret \
             -s malloc,256m"

Red Hat Enterprise Linux / CentOS

On Red Hat/CentOS you can find a similar configuration file in /etc/sysconfig/varnish.

Restarting Varnish again

Once the change is done, restart Varnish: service varnish start.

Now everyone accessing your site will be accessing through Varnish.